Re: swap partition leads to instability?

2013-05-27 Thread M. V.
jb jb.1234abcd at gmail.com writes:

 M. V. bored_to_death85 at yahoo.com writes:

 recently I heard from a FreeBSD expert that I shouldn't have
 swap partition for my server, and having swap partition could
 make my server unstable. 

 I think your FB expert was up to something. I bet he spoke out
 of experience.
 
 Swapping by itself can decrease system reliability due to possible
 data corruption on swap disk or during two-way transfers, with 

 subsequent incorrect RAM and machine crash.

 But, swapping is also a symptom, not a problem.
 It is never a good idea to let it get to that point.
...

 http://blog.jcole.us/2010/09/28/mysql-swap-insanity-and-the-numa-architecture/


Very interesting point.
- do you think this could hurt my server's stability too? (most of its work is 
a noticeable amount of packet-forwarding, and other network services, like 
firewall, dhcp server, ntp server, etc)
- if so, in what conditions? can I do something to prevent this? or should I 
just get rid of the swap partition?

- does swap partition do any good for me at all? I mean if we even suppose 
nothing bad happens because of it, is it worth risking to keep it? 


thank you.
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swap partition leads to instability?

2013-05-26 Thread M. V.
hi everyone,

I have a 24/7 network server/gateway with FreeBSD-8.2 on a SSD drive. it's 
partitioned as normal (/ , /tmp, /var , /usr and swap) for a long time now. But 
recently I heard from a FreeBSD expert that I shouldn't have swap partition for 
my server, and having swap partition could make my server unstable. this was so 
strange for me, and I searched a lot but couldn't find a reason for this claim.


so my question is simple:
- could having a swap partition, be a bad thing for my FreeBSD server? and if 
so, why and in what conditions?


Cheers!
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